Redundancy

Updated by Jae Ha

VRRP

By default, CoreSite configures a customer gateway with Virtual Router Redundancy Protocol (VRRP), network protocol that provides high availability for default gateways on a network, to provide customers with redundancy towards both of our CoreSite routers.

The first usable IP address is assigned for the VRRP Virtual IP address, and then the next two are used by the CoreSite interface participating in VRRP

Network Subnet

66.128.156.112/29

CoreSite Virtual Gateway IP

66.128.156.113

CoreSite IP PRI

66.128.156.114

CoreSite IP SEC

66.128.156.115

Customer Usable IP

66.128.156.116~66.128.156.118

Single Physical Hand-Off

In a single physical hand-off, the customer orders a single Blended IP circuit with bandwidth and IP subnet assignment. It is highly encouraged to order a redundant port for all production level traffic.

Redundant Port

Step-1: For a redundant port, the customer first orders a single Blended IP circuit with bandwidth and IP subnet assignment.

Step-2: Next, the customer orders a redundant Blended IP circuit matching the bandwidth speed of the original circuit, this redundant port order does not get a separate IP subnet assignment since this utilizes the same layer 3 config as the primary port and joins the same layer 2 domain of the primary port for redundancy, while terminating into a different hand-off switch on the CoreSite side.

The customer must configure their physical hand-off interface as a layer 3 interface, if configuring as layer 2 interface, dual physical hand off ports cannot share the same broadcast domain/vlan


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